package operation;

import book.Book;
import book.BookList;

import java.util.Scanner;

/**
 * Created with IntelliJ IDEA.
 * Description:
 * User: GodK
 * Date: 2024-03-16
 * Time: 19:28
 */
public class DelOperation implements IOPeration {
    @Override
    public void work(BookList bookList) {
        System.out.println("删除图书.....");
        System.out.println("请输入你要删除的图书名：");
        Scanner scanner = new Scanner(System.in);
        String bookName = scanner.nextLine();
        int currentSize = bookList.getUsedSize();
        int j = -1;
        int i = 0;
        for (; i < currentSize ; i++) {
            Book book = bookList.getBook(i);
            if(book.getName().equals(bookName)){
                j = i;
                break;
            }
        }
        if(i>=currentSize) {
            System.out.println("没有你要删除的书....");
            return;
        }
        for(;j<currentSize;j++){
            Book book = bookList.getBook(j+1);
            bookList.setBook(j,book);
        }
        bookList.setBook(i,null);
        bookList.setUsedSize(i-1);
    }
}
